I still don’t like facebook. Even without the other stuff, I’m just not the type to document and share my life.
...
It’s there to solve a very real problem, that nobody is asking to fix.
"I'm not the type to comment and review books, and the people I do know who do that are old, so BookWyrm is solving a problem nobody asked to fix."
Maybe there are people, younger and more ideologically devoted to non-corporate services than your mom, who do like to share their lives with a limited set of friends and would like a service without all the evil stuff.